Method of making endless metal cloths or wire fabrics



' Nov. 12, 1935. H. KURTZ 2,020,894

METHOD OF MAKING ENDLESS METAL CLOTHS OR WIRE FABRICS V Filed Jan.' 29, 1934 r A I I ll U I I I I V ff 5. 7%/ NVfN 7 5 Patented Nov. 12,- 1935 PATENT OFFICE METHOD'OF MAKING ENDLESS METAL .CLOTHS OR WIRE FABRICS Bans Kurtz, Beutlingen, Germany Application January 29, 1934, Serial No. 708,890 In Germany February 20, 1933 2 Claims.

The object of this invention is to connect the 10 two ends of the wire fabric in a simple and reliable manner. The warp wires alone being placed together directly in the same plane and welded. The following description with the accompany-mg drawing will enable those skilled in 15 the art to make and operate the device.

In the drawing:

Figure 1 is a longitudinal section of part of the wire fabric showing two warp wire ends in position to be welded,

20 Fig. 2 is a plan view of the connected ends the wire fabric, and

Fig. 3 is a view similar to Fig. 1, after the warp wires have been welded.

To carry the invention into effect the alternate 25 warp wires, that is for example, all those above the last weft thread, are bent upwardly to a position about perpendicular to the plane of the cloth. This may be conveniently done by withdrawing upwardly the last weft wire. If, how- 8 ever, it should be done in any other way, the last weft wire is removed in any case. The two wire fabric ends are then placed together in a plane so that the erect warp wire ends of one end of the cloth abut against the horizontal warp 35 wire ends of the other end of the cloth.

The vertical warp wire ends of the one end are then fused onto the horizontal warp wire ends of the other end by means of a welding burner or by electrical means, and in this way the two wire ends are connected and an uninterrupted joint is produced without the position of the wires being altered and without any further treatment being necessary.

The warp wires are shown in Figure 1 in the position in which they are when about to be welded, while Figure 3 shows clearly the appearance of the warp wire after being welded, k representing the warp wire on each side and v the enlargement produced at the welding point.

Figure 2 shows in plan a portion of the endless band, including the connection in which 2: represents the enlargements in plan view of the point of connection of the ends of the warp wires. This connection of the fabric ends is unusually strong. The undesired thickening of the spaces between the meshes which occurs in the stitch is completely avoided and the new weld connection forms practically no noticeable interruption in the fabric.

What I claim is:

1. The method of making endless cloths or wire fabrics, more particularly for making paper and cellulose material which comprises removing the last weft wire at each end of the strip of which the endless cloth is to be made, bending up the end portions of alternate warp wires, placing the ends of the sheet so that the bent up warp wires of one end oppose the unbent wires of the other end and fusing each bent up wire end on to the unbent end portion of the opposite wire.

2. The method as claimed in claim 1 wherein the alternate warp wires are bent upward by removing the weft wire bodily at right angles to the plane of the strip of which the endless band is made.

HANS KURTZ. 

